**Steps to reproduce:**
* Install the **Netherlands - SBR** (`l10n_nl_reports_sbr`) and **Netherlands - SBR OB Nummer** (`l10n_nl_reports_sbr_ob_nummer`) modules.
* Create two companies with Dutch localization.
* Go to **Accounting → Configuration → Tax Units** and create a Tax Unit with its own **Tax ID** (e.g. `NL826317558B01`), adding both companies.
* On the main company form, fill in the **Omzetbelastingnummer** field (e.g. `123456782B90`).
* Go to **Accounting → Reporting → Tax Return**, select the Tax Unit in the filter, and click **XBRL → Download XBRL File**.

**Observed behavior:**
* The `<xbrli:identifier>` in the exported XBRL file contains the company's **Omzetbelastingnummer** (`123456782B90`) instead of the Tax Unit's VAT (`826317558B01`).
* The tax authority rejects the return because the identifier does not match the fiscal unity registration.

**Cause:**
* `_get_sbr_identifier()` in `l10n_nl_reports_sbr_ob_nummer` unconditionally returns `self.env.company.l10n_nl_reports_sbr_ob_nummer` before consulting the Tax Unit.
* The `super()` call, which correctly routes to `tax_unit.vat` via `report.get_vat_for_export()`, is only reached when the company field is empty — so the Tax Unit's VAT is never used when a company OB-number is set.

**Fix:**
* When a Tax Unit is active in the report options, delegate immediately to `super()._get_sbr_identifier()`, which resolves `tax_unit.vat` through the existing `get_vat_for_export()` logic.
* The company-level `l10n_nl_reports_sbr_ob_nummer` override is preserved as a fallback for the `company_only` (no Tax Unit) case.

opw-6350840

Forward-Port-Of: odoo/enterprise#126999
Forward-Port-Of: odoo/enterprise#125167

The fix introduced in https://github.com/odoo/enterprise/commit/9e9c99712ad4b9d58dc7601da41a852e457ad097 didn't account for the fact that `post.get('media_url') ` could return a None value, which in turn would raise en error when trying to concatenate the value later.

This in turn:
- will block syncing of instagram instagram posts
- will raise a traceback when you open the Social Marketing module and the auto-sync kicks in.
### Example traceback
```
Traceback (most recent call last):
[...]
  File "/home/odoo/src/enterprise/saas-19.2/social_instagram/models/social_stream.py", line 86, in _fetch_stream_data
    return self._fetch_instagram_posts()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/odoo/src/enterprise/saas-19.2/social_instagram/models/social_stream.py", line 64, in _fetch_instagram_posts
    values['message'] = (values['message'] + "\n" + post.get('media_url')).strip()
                         ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
TypeError: can only concatenate str (not "NoneType") to str
```

### Solution:
Fallback to an empty string if `post.get('media_url')` yields a None value.

OPW-6449357

Forward-Port-Of: odoo/enterprise#127049
Forward-Port-Of: odoo/enterprise#126987

**Description**

When printing the legal PDF of a CFE, the report can request a dedicated addenda page (`adenda=true` report parameter) when the addenda does not fit in the small box of the standard report (roughly 6 lines of 140 characters).

`l10n_uy_edi_document._get_report_params()` computed the addenda by calling `self.move_id._l10n_uy_edi_get_addenda()` directly. For e-remito EDI documents created from stock pickings, `move_id` is not set, so the addenda was always empty and the dedicated addenda page was never requested for delivery guides.

**Changes**

- Resolve the addenda from the document origin record: reuse the existing `_get_origin_record()` abstraction. Add it on `l10n_uy_edi.document` (returns the move) and let `l10n_uy_edi_stock` extend it to fall back to `picking_id`; `_get_report_params()` now reads the addenda through it.
- Remove a no-op `_get_pdf()` override in `l10n_uy_edi_stock`.
- Add a unit test covering the dedicated addenda page threshold (6 lines x 140 chars) for delivery guides.

**Note**

This PR replaces branch `adhoc-dev:18.0-t-stock-edi-addenda-fix-kz` (original authorship preserved); resubmitted from a new branch to keep follow-up and tracking with the current maintainer.

Forward-Port-Of: odoo/enterprise#124539